Let,
12x + 15y =34--------(1)
-6x + 5y =3-------(2)
(2) x 2 = -12x + 10y =6-------(3)
(3) + (1)
20y =40
y= 2
substitute y=2 into (1)
12x + 15(2) =34
12x =4
x= 1/3
The answer would be B
S) This is because 160 ÷ 2 = 80 and 4÷2 = 2
T) This is because 1.5x6=9 and 1.5x10= 15
Because this triangle is an isosceles, we know that angle M and angle L are equal (as shown by the diagram)
So, we make the two values equal
5y-19=56
Take 19 to the other side as a positive
5y=75
y is equal to 15
But, we aren't done yet as the question asks us to find the value of k
So, we do
5*15-19+56+K=180
112+K=180
Take 112 to the other side as a negative number
180-112 is 68
So, angle K is equal to 68 degrees
Answer:
Given Equation: 5x/10 = 2.
Steps:
Step 1: Multiply both sides of the equation by the L.C.M of the numerators of both sides of the equation ( 10 and 1). L.C.M is 10
(5x/10).10 = 2x10
5x = 20
Step 2: Divide both sides by the co-efficient of x i.e.5
(5x)/5 = 20/5
x = 4
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Answer:
y = 22.5
Step-by-step explanation:
Here, the 4 angles shown are all exterior angles of the polygon.
The sum of the exterior angles of a polygon is ALWAYS 360°
<em>So we add up the 4 angles (given in terms of y) and sum it to 360 and solve for y:</em>
y = 22.5
